Advertisement
Advertisement
oxygen cycle
noun
, Ecology.
- the process by which oxygen released into the atmosphere by photosynthetic organisms is taken up by aerobic organisms while the carbon dioxide released as a by-product of repiration is taken up for photosynthesis.
Discover More
Word History and Origins
Origin of oxygen cycle1
First recorded in 1930–35
Discover More
Example Sentences
The challenge now, he says, is assessing “the relative importance of this process versus the other things we know about the global oxygen cycle.”
From Scientific American
“There’s a lot we don’t know about the oxygen cycle on Mars. That’s become apparent.”
From New York Times
The former endangers health, and many ecologists say that increased carbon dioxide threatens the earth's oxygen cycle.
He could listen to his own lungs and pulse, loud in the spacesuit; he could even notice its interior smell, blend of plastic and oxygen cycle chemicals, flesh and sweat.
From Project Gutenberg
Advertisement
Advertisement
Advertisement
Advertisement
Browse